 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS: B22555      ]
 ] R. LOHMANN         ]    BFS PROGRAM NOTE         ] DR:  106077      ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: 10/09/90   ]
 ] RID/922-1921       ]      RELEASE NOTE ( )       ] REV A: 8/29/94   ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI-8C AND SUBS                ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS( ) GNC( ) SEQ(X) SM/SP( ) IPL( )]        1,6              ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:   SSME HIP                                       ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG038120 / 3.3.1.14                            ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]        BFS REANNUNCIATION OF SSME FAIL AFTER ENGAGEMENT             ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] A PROBLEM EXISTS WHERE IT IS POSSIBLE FOR BFS TO ANNUNCIATE AN SSME ]
 ] FAILURE A SECOND TIME.  IF BFS IS PRE-ENGAGED AND AN SSME FAILS     ]
 ] BEFORE EVENTS "GUIDANCE FINE COUNTDOWN INIT" OR "ENABLE LOW LEVEL   ]
 ] SENSING" THE FAILURE WILL BE ANNUNCIATED. IF BFS THEN GOES          ]
 ] STANDALONE PRIOR TO ENGAGEMENT, BFS WILL STOP MONITORING THE ENGINE ]
 ] STATUS WORD. IF BFS REMAINS STANDALONE FOR A PERIOD OF TIME LONG    ]
 ] ENOUGH TO RESET THE ANNUNCIATION FLAGS, UPON ENGAGEMENT BFS WILL    ]
 ] ANNUNCIATE THE SAME SSME FAILURE A SECOND TIME.                     ]
 ]                                                                     ]
 ] ANOTHER SCENARIO ALSO EXISTS WHERE IF BFS IS ENGAGED AFTER EVENTS   ]
 ] "GUIDANCE FINE COUNTDOWN INIT" OR "ENABLE LOW LEVEL SENSING" AND    ]
 ] BEFORE MECO, BFS MAY RE-ANNUNCIATE A FAILED ENGINE MESSAGE IF THAT  ]
 ] ENGINE HAD PREVIOUSLY FAILED PRIOR TO THESE EVENTS. THIS MAY OCCUR  ]
 ] EVEN IF BFS IS NOT STANDALONE PRIOR TO ENGAGEMENT.                  ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] THE USER SHOULD IGNORE THE DUPLICATE ERROR MESSAGES.                ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI: <S> G. ALBRIGHT       DATE 08/30/94]                             ]
 ]    --------------------      ---------]                             ]
 ]FDSD:   W. R. PRUETT      DATE 10/19/94]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 10/21/94 ]
 ]PF MGR:  J. P. RUPPERT    DATE 10/20/94]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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